EFFECT OF RICE HUSK ASH TO THE PERFORMANCE OF CONCRETE BLOCK
Farah Alwani Wan Chik, Ramadhansyah Putra Jaya, Badorul Hisham Abu Bakar, Megat Azmi Megat Johari

Abstract
The laboratory results of an investigation on the properties of concrete block containing Rice Husk Ash were presented in this paper. Materials used in the investigation were Ordinary Portland cement (OPC), rock chipping, quarry dust and RHA. Concrete samples were cast with different RHA replacement level at 0, 10, 15 and 20%. Several tests were carrying out i.e. XRD, TGA/DTA analysis, compressive strength and water absorption in order to determine concrete block chemical and mechanical properties. In conclusion, it was found that the optimum RHA replacement level is 15%. Conversely, compaction and percentage of RHA in concrete block are also discussed in this study as an influencing factor to the performance of concrete block.

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